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TitleMg2+-doped poly(ε-caprolactone)/siloxane biohybrids
Author(s)Teixeira, J. C. S.
Fernandes, M.
Zea Bermudez, V. de
Barbosa, P. C.
Rodrigues, L. C.
Silva, Maria Manuela
Smith, Michael John
KeywordsMagnesium salts
Solid polymer electrolyte
Magnesium triflate
Ionic conductivity
Thermal analysis
Poly(epsilon-caprolactone)/siloxane biohybrid
Poly(ε-caprolactone)/siloxane biohybrid
Issue date2010
JournalElectrochimica Acta
Abstract(s)Electrolytes based on a poly(ε-caprolactone) (PCL)/siloxane organic/inorganic host framework doped with magnesium triflate (Mg(CF3SO3)2) were synthesized by the sol-gel process. In the biohybrid matrix short PCL chains are covalently bonded via urethane linkages to the siliceous network. In this study the salt content of samples was identified using the conventional n notation, where n indicates the number of (C(=O)(CH2)5O) PCL repeat units per Mg2+ ion. Materials with compositions ranging from n=∞ to 2 were prepared. The only composition prepared that is not entirely amorphous is that with n = 1. Xerogels with n ≥ 7 are thermally stable up to up to at least 200 ºC. The most conducting ormolyte of the series is that with n = 26 (5.9x10-9 and 9.8x10-7 Scm-1 at 24 and 104 ºC, respectively).
Publisher versionThe original publication is available at
AccessOpen access
Appears in Collections:CDQuim - Artigos (Papers)

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